LibraryPackage.hpp

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/******************************************************************************/
/* REXX Kernel                                                                */
/*                                                                            */
/* Primitive Rexx function/method package                                     */
/*                                                                            */
/******************************************************************************/
#ifndef LibraryPackage_Included
#define LibraryPackage_Included
 
#include "RexxCore.h"
#include "SysLibrary.hpp"
#include "RexxNativeCode.hpp"
#include "CallbackDispatcher.hpp"
 
class PackageManager;
class RexxNativeMethod;
 
typedef RexxPackageEntry * (RexxEntry *PACKAGE_LOADER)();
 
class LibraryPackage : public RexxInternalObject
{
public:
    inline void *operator new(size_t, void *ptr) {return ptr;}
    inline void  operator delete(void *, void *) {;}
    void *operator new(size_t);
    inline void  operator delete(void *) {;}
 
    LibraryPackage(RexxString *n);
    LibraryPackage(RexxString *n, RexxPackageEntry *p);
    inline LibraryPackage(RESTORETYPE restoreType) { ; };
 
    void   live(size_t liveMark);
    void   liveGeneral(int reason);
    bool   load();
    void   unload();
    RexxPackageEntry *getPackageTable();
    void   loadPackage();
    void   loadRoutines(RexxRoutineEntry *table);
    RexxMethodEntry *locateMethodEntry(RexxString *name);
    RexxRoutineEntry *locateRoutineEntry(RexxString *name);
    RexxNativeMethod *resolveMethod(RexxString *name);
    RoutineClass *resolveRoutine(RexxString *name);
    PNATIVEMETHOD resolveMethodEntry(RexxString *name);
    PNATIVEROUTINE resolveRoutineEntry(RexxString *name);
    PREGISTEREDROUTINE resolveRegisteredRoutineEntry(RexxString *name);
    void   reload();
    void   reload(RexxPackageEntry *pack);
    inline bool isLoaded() { return loaded; }
    inline bool isInternal() { return internal; }
    inline void makeInternal() { internal = true; }
 
protected:
 
    RexxPackageEntry *package;  // loaded package information
    RexxString *libraryName;   // the name of the library
    RexxDirectory *routines;   // loaded routines
    RexxDirectory *methods;    // loaded methods
    SysLibrary  lib;           // the library management handle
    bool        loaded;        // we've at least been able to load the library
    bool        internal;      // this is an internal package...no library load required.
};
 
 
class LibraryLoaderDispatcher : public CallbackDispatcher
{
public:
    inline LibraryLoaderDispatcher(RexxPackageLoader l) : loader(l) { }
    virtual ~LibraryLoaderDispatcher() { ; }
 
    virtual void run();
 
protected:
    RexxPackageLoader loader;
};
 
 
class LibraryUnloaderDispatcher : public CallbackDispatcher
{
public:
    inline LibraryUnloaderDispatcher(RexxPackageUnloader u) : unloader(u) { }
    virtual ~LibraryUnloaderDispatcher() { ; }
 
    virtual void run();
 
protected:
    RexxPackageUnloader unloader;
};
 
#endif